Most Cermets, which normally have high thermal conductivity and high thermal shock resistance, comprises of ceramic & metallic components of ______________ percent respectively?
Correct answer: D. 80 and 20
- A. 60 and 40
- B. 20 and 80
- C. 50 and 50
- D. 80 and 20
Explanation
Most cermets contain a ceramic phase as the major component, commonly about 80%, bonded with roughly 20% metal. The ceramic provides hardness and heat resistance, while the metal improves toughness and thermal-shock behavior.
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